Sheet-metal-tube-planishing machine.



B. 'F. WINTERHOFF.

SHEET METAL TUBE PLANISHING MACHINE.

APPLICATION 'HLED JUNE I8. l9l4.

Patented Nov. 30, 1915.

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SHEET-1VIETAL- TUBE-PLANISI-IING- MACHIN E.

Specification of Letters Patent.

Patented Nov. 34;), 1915.

7 Application filed June 18, 1914. Serial No. 845,881.

To aZZ whom it may concern:

Be it known that I, BENJAMIN F. NIN- 'rnarrorr, a citizen of the United States, and a resident of the city of Elkhart, in the county of Elkhart and State of Indiana, have invented a new and Improved Sheetivfetal-Tube Planishing Machine, of which the following is a full, clear, and exact description.

Among the principal objects which the present invention has in view, are: to provide a machine for rolling or leveling seams in sheet metal and more particularly for the rolling or leveling of the seams formed in tubes, from which musical instruments are constructed; to provide means for manually controlling the pressure applied in the operation; and to provide rollers and beds of varied shape for peening or leveling the joints formed by welding.

Drawinga-Figure l is a side elevation of a planishing machine constructed and arranged in accordance with the present invention; Fig. 2 is a vertical cross-section on an enlarged scale, the section being taken as on the line 2-2 in Fig. 1; Fig. 3 is a detail view on an enlarged scale, showing a fragment of the anvil bed and supporting frame, with a die roll and means for manipulating the same, the section being taken as on the line 33 in Fig. 2; Fig. 4 is a detail view in cross-section, the section being taken as on line 4 4 in Fig. 2; Fig. 5 is a cross-section, taken on the line 55 in Fig. 2; and Figs. 6 and 7 are detail views showing different forms of die wheels, used by the planishing machine herein disclosed.

Description.-As indicated in the above statement, the machine is particularly designed to peen or hammer the seams formed in the manufacture of tubular musical instruments. The. seams are universally formed by a preliminary step, where the edges are overlapped and welded. Heretofore the welded joint has been peened in the conventional manner, the operator using a hammer, suitable for the purpose, by which he has carefully beaten the seam to the same thickness as the remainder of the tube. As seen in the drawings, this operation is accomplished by the use primarily of a die roll 12. The roll is provided with suitable trunnions 13. The trunnions 13 are disposed in bearings formed in sliding blocks 14. The blocks 14 are laterally grooved to fit the guide rails 15, with which the heads of the standards 16 are provided.

The standards 16 are rigidly secured to the bed rails 17. The bed rails 17 are in turn supportingly mounted on legs 18, which tie the said rails transversely and thus prevent the spread of the lower ends of the standards 16. A similar ofiice is performed by the tie plate 19.

is elevated and depressed The roll 12 manually by revolving the hand wheel 20. mounted on a shaft and the nibs 21-, are transmission gear wheels 25, said gear wheels being preferably inte gral with the said screws. The wheels25 are centrally provided with hubs, the surfaces whereof rest between the block 22 and the plate 19, as best shown in Fig. 2 of the drawings. The screws 23 are threaded to produce similar actions in the respective blocks 14, with which they are engaged, as a result of the action of the master gear wheel 26. The gear wheel 26 is keyed to the shaft 21, as seen best in Fig. 2 of the drawings. The block 22 is held in position by the bolts 27.

To receive the impact or pressure of the die roll 12, a filler bar 28 is employed. The bar 28 is disposed within the tube 29, which is under treatment. The tube thus furnished, is placed on an anvil plate 30, held in the bed 31. The bed 31 is supported by the rails 17, the upper edges whereof are grooved to form runways for the slides 32 with which the said bed is provided.

Preliminary to treating the tube 29 in the manner performed by the present machine, the edges of the tube are lapped and are welded. The oflice of the present machine as above indicated, is to reduce the thickness of the welded portion or seam, and it is with this end in view that the filler bar 28 is placed within the tube and the tube thus furnished is placed between the die roll 12 and the anvil plate 30. After the tube and bar 28, have been thus disposed, the hand wheel 20 is manipulated to lower the die roll 12, to force the seam of the tube 29 on. the bar 28. The bed 31 is passed under the die roll, the pressure applied by the die roll, being gradually increased and manually cont-rolled. At the end of the operation, it will be found that the seam has been reduced in thickness ,to coincide with the thickness of the tube at either side there of. The action of the bed is then arrested; the wheel 20 reversely rotated to lift the die roll from contact with the tube, and the said tube with its bar 28 is then removed from the said bed.

To move the bed 31, it is provided with a central rack rail 33, the teeth of which are engaged with the driving pinion 34, con

stituting the end of a transmission gear train, for transmitting the power imparted to the pulley and the shaft 36 thereof. The pinion 3-l is mounted on the shaft 37 with the gear wheel 38, which gear wheel is operatively engaged by a companion gear wheel 39, both of said gear wheels being protectively covered by a guard shaft 40.

I claim:

1. A machine as characterized, comprising a die roll; a bed; driving mechanism for said bed; a plurality of standards, one mounted on each side of said bed, said standards having formed therein, vertical guides; a plurality of sliding blocks mounted in said guides and embodying bearings for said roll; a plurality of feed screws operatively connected with said Copies of this patent may be obtained for five cents each,

sliding blocks and having integrally formed thereon gear wheels disposed in spaced relation; a master gear wheel operatively connected with both of said gear wheels; and a hand wheel fixedly connected with said master gear wheel.

2. A machine as characterized, comprising a' die roll; a'bed; driving mechanism for said bed; a plurality of standards, one mounted on each side of said bed; said standards having formed therein, vertical guides; a plurality of sliding blocks mounted in said guides and embodying bearings for said roll; a plurality of feed screws operatively connected with said sliding blocks and having integrally formed thereon gear wheels disposed in spaced relation;

a master gear wheel operatively connected with both of said gear wheels; a hand wheel fixedly connected with said master gear wheel; and a head block mounted upon said standards, and having thrust bearings for said screws to receive the pressure strain imposed on said roll.

In witness whereof I have signed my name to this specification in the presence of two subscribing witnesses.

BENJAMIN F. WVINTERHOFF.

Witnesses:

MA THA HonoKnLn, ANDREW T. ANDERSON.

by addressing the Commissioner of Patents,

Washington, D. 0. 

